This Avantco 18939991 condenser fan blade is a direct replacement for the one that came with your Avantco air curtain merchandiser. It can be used to replace a broken or missing part on your Avantco air curtain merchandiser. To keep your unit operating efficiently, make sure to replace a broken fan blade promptly. It's compatible with Avantco WVAC and BVAC series air curtain merchandisers.